mult_vcs.tdf

用于实现超声回波数据的对数压缩处理,用ALTERA QUARTUSII5.1以上版本软件可以打开

--lpm_mult CBX_DECLARE_ALL_CONNECTED_PORTS="OFF" DEVICE_FAMILY="Cyclone II" DSP_BLOCK_BALANCING="Auto" INPUT_B_IS_CONSTANT="NO" LPM_PIPELINE=1 LPM_REPRESENTATION="UNSIGNED" LPM_WIDTHA=13 LPM_WIDTHB=7 LPM_WIDTHP=20 LPM_WIDTHS=20 USE_EAB="OFF" clock dataa datab result CARRY_CHAIN="MANUAL" CARRY_CHAIN_LENGTH=48
--VERSION_BEGIN 5.1 cbx_cycloneii 2005:08:30:10:31:44:SJ cbx_lpm_add_sub 2005:09:30:12:13:06:SJ cbx_lpm_mult 2005:08:05:09:57:06:SJ cbx_mgl 2005:10:09:07:39:04:SJ cbx_padd 2005:08:04:11:57:36:SJ cbx_stratix 2005:10:07:15:53:08:SJ cbx_stratixii 2005:07:27:05:50:56:SJ cbx_util_mgl 2005:09:13:05:23:22:SJ  VERSION_END


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FUNCTION cycloneii_mac_mult (aclr, clk, dataa[dataa_width-1..0], datab[datab_width-1..0], ena, signa, signb)
WITH ( 	dataa_clock,	dataa_width,	datab_clock,	datab_width,	signa_clock,	signb_clock) 
RETURNS ( dataout[dataa_width+datab_width-1..0]);
PARAMETERS
(
	dataa_width = 0
);
FUNCTION cycloneii_mac_out (aclr, clk, dataa[dataa_width-1..0], ena)
WITH ( 	dataa_width,	output_clock) 
RETURNS ( dataout[dataa_width-1..0]);

--synthesis_resources = dsp_9bit 2 
SUBDESIGN mult_vcs
( 
	clock	:	input;
	dataa[12..0]	:	input;
	datab[6..0]	:	input;
	result[19..0]	:	output;
) 
VARIABLE 
	mac_mult1 : cycloneii_mac_mult
		WITH (
			dataa_clock = "none",
			dataa_width = 13,
			datab_clock = "none",
			datab_width = 7,
			signa_clock = "none",
			signb_clock = "none"
		);
	mac_out2 : cycloneii_mac_out
		WITH (
			dataa_width = 20,
			output_clock = "0"
		);
	aclr	: NODE;
	clken	: NODE;

BEGIN 
	mac_mult1.dataa[] = ( dataa[]);
	mac_mult1.datab[] = ( datab[]);
	mac_mult1.signa = B"0";
	mac_mult1.signb = B"0";
	mac_out2.aclr = aclr;
	mac_out2.clk = clock;
	mac_out2.dataa[] = mac_mult1.dataout[];
	mac_out2.ena = clken;
	aclr = GND;
	clken = VCC;
	result[19..0] = mac_out2.dataout[19..0];
END;
--VALID FILE